shortcrust pastry Germany

...Hirschhornsalz, also known as ammonium or ABC leavening agent, is a powerful leavening agent. It was previously derived from deer antlers or horn and leather waste, which explains the origin of its name. Hirschhornsalz is a baking leavening agent. It is used to lighten flat baked goods, such as shortcrust pastry, speculoos, or gingerbread. It is not suitable for high-rising baked goods (e.g...